The PHY requires specific initialization sequences. The A133 often requires "USB eye tuning" parameters in the DTS to pass USB certification (Signal Integrity).
Mainline is reliable for host mode. For gadget/OTG, BSP can be less buggy on some boards. allwinner a133 usb driver
: Ensure high-speed, uninterrupted file transfers between your device and the PC. ⚙️ How to Install the Allwinner A133 Driver on Windows The PHY requires specific initialization sequences
The Allwinner A133 SoC is a quad-core processor based on the ARM Cortex-A7 architecture, with a clock speed of up to 1.2 GHz. It integrates various peripherals, including a USB 2.0 host, a USB 2.0 OTG (On-The-Go) port, a LCD display interface, a camera interface, and multiple GPIO (General Purpose Input/Output) pins. The A133 SoC also features a built-in Mali-400MP2 GPU (Graphics Processing Unit), which supports 2D and 3D graphics acceleration. For gadget/OTG, BSP can be less buggy on some boards